<template>
  <header class="header">
    <h1>todos</h1>

    <input id="toggle-all" class="toggle-all" v-model="checkAll" type="checkbox" />
    <label for="toggle-all"></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      autofocus
      v-model.trim.lazy="todoName"
      @keyup.enter="add"
    />
  </header>
</template>

<script>
export default {
  props:{
    list:{
      required:true,
      type: Array
    }
  },
  data () {
    return {
      todoName: '',
    }
  },
  computed:{
    checkAll:{
      get(){
        return this.list.every(v => v.isDone)
      },
      set(val){
       this.$emit('check',val)
      }
    }
  },
  methods: {
    add () {
      if (this.todoName !== '') {
        this.$emit('add', this.todoName)
        this.todoName = ''
      }
    }
  }
}
</script>
